There may not be much else you can do about your excessive saliva, although some women report that the following measures are helpful:
Brush your teeth and use mouthwash several times a day.
Eat frequent, small, well-balanced meals, and avoid excessive amounts of starchy food.
Drink plenty of water. Keep a water bottle handy and take frequent small sips.
Suck on hard candy or chew sugarless gum. This won't make you produce less saliva, but it will make it easier for you to swallow the saliva you do produce. Avoid sour candies and gum, as they can stimulate saliva production.
If you can, just swallow any excess saliva you create. However, if swallowing it makes you feel nauseated, you may find that you need to spit it into a tissue, washcloth, or cup. If this is the case, be sure to drink plenty of water so you don't get dehydrated.